Honda CRF450X 2005 User Manual

Adjust the stopper plate angle as shown.
Apply oil to the decompressor cam mounting bolt
threads .
Install the decompressor cam mounting bolt.
Apply molybdenum oil solution to the rocker arm
bore and valve slipper surfaces.
Install the rocker arm and rocker arm shaft into the
camshaft holder .
Install a new stopper ring into the groove in the
camshaft holder.
Install the de comp ressor arm, decompressor lifter
and spring .
• Align the decompressor arm and decompressor
lifter as shown .
• Align the spring end and camshaft holder tab 85
sh own.
~ .--
CYLINDER HEADIVALVES
ASSEMBLY ...--- BOLT
,
STOPPER PLATE
9-15

Honda CRF450X 2005 Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke	96.0mm x 62.1mm
Compression Ratio	12.0:1
Valve Train	Unicam, four-valve
Transmission	Wide-ratio five-speed
Front Brake	Single 240mm disc with twin-piston caliper
Rear Brake	Single 240mm disc
Front Tire	80/100-21
Rear Tire	110/100-18
Wheelbase	58.3 inches
Seat Height	37.6 inches
Fuel Capacity	1.9 gallons
Ignition	Solid-state CD with electronic advance
Final Drive	520 O-ring-sealed chain
Front Suspension	47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4 inches travel
Rear Suspension	Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and compression damping adjustment separated into low-speed (13 positions) and high-speed (3.5 turns); 12.4 inches travel
Induction	Keihin 40mm flat-slide carburetor